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A 96-well automated method to study inhibitors of human sodium-dependent D-glucose transport

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Abstract

The sodium-dependent D-glucose transporter (SGLT) family is involved in glucose uptake via intestinal absorption (SGLT1) or renal reabsorption (SGLT1 and SGLT2). Current methods for the screening of inhibitors of SGLT transporters are complex, expensive and very labor intensive, and have not been applied to human SGLT transporters. The purpose of the present study was to develop an alternative 96-well automated method to study the activity of human SGLT1 and SGLT2. Chinese hamster ovary (CHO) Flp-In cells were stably transfected with pcDNA5-SGLT1 or pcDNA5-SGLT2 plasmid and maintained in hygromycin-selection Ham's F12 culture medium until hygromycin-resistant clones were developed. SGLT1 and SGLT2 gene expression was evaluated by relative real-time reverse transcription-polymerase chain reaction (RT-PCR) quantification, Western blotting, and immunocytochemical analysis. The clones with higher expression of SGLT1 and SGLT2 were used for transport studies using [14C]-methyl-α-D-glucopyranoside ([14C]AMG). The advantage of using the 96-well format is the low amount of radioactive compounds and inhibitory substances required, and its ability to establish reproducibility because repetition into the assay. This method represents an initial approach in the development of transport-based high-throughput screening in the search for inhibitors of glucose transport. The proposed method can easily be performed to yield quantitative data regarding key aspects of glucose membrane transport and kinetic studies of potential inhibitors of human SGLT1 and SGLT2. (Mol Cell Biochem xxx: 91–98, 2005)

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Authors and Affiliations

  1. Max Planck Institute of Molecular Physiology, Dortmund, Germany

    Francisco Castaneda & Rolf K.-H. Kinne

  2. Department of Epithelial Cell Physiology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Str. 11, 44227, Dortmund, Germany

    Francisco Castaneda

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  1. Francisco Castaneda
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  2. Rolf K.-H. Kinne
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Correspondence to Francisco Castaneda.

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Castaneda, F., Kinne, R.KH. A 96-well automated method to study inhibitors of human sodium-dependent D-glucose transport. Mol Cell Biochem 280, 91–98 (2005). https://doi.org/10.1007/s11010-005-8235-y

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  • DOI: https://doi.org/10.1007/s11010-005-8235-y

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